diff mbox

[v3,net-next,4/4] rocker: make rocker_port_internal_vlan_id_{get,put}() non-transactional

Message ID 1432100902-10187-5-git-send-email-simon.horman@netronome.com
State Superseded, archived
Delegated to: David Miller
Headers show

Commit Message

Simon Horman May 20, 2015, 5:48 a.m. UTC 
The motivation for this is that rocker_port_internal_vlan_id_{get,put} appear
to only partially implement the transaction model: memory allocation
and freeing is transactional, but hash and bitmap manipulation is not.

The latter could be fixed, however, as it is not currently exercised
due to trans always being SWITCHDEV_TRANS_NONE it seems cleaner
to make rocker_port_internal_vlan_id_get non-transactional.

Found by inspection.
I do not believe that this change should have any run-time effect.

Fixes: c4f20321d968 ("rocker: support prepare-commit transaction model")
Acked-by: Scott Feldman <sfeldma@gmail.com>
Signed-off-by: Simon Horman <simon.horman@netronome.com>

---
v3
* No change

v2
* Added Scott Feldman's ack
---
 drivers/net/ethernet/rocker/rocker.c | 21 +++++++--------------
 1 file changed, 7 insertions(+), 14 deletions(-)

Comments

Jiri Pirko May 20, 2015, 6:02 a.m. UTC | #1 
Wed, May 20, 2015 at 07:48:22AM CEST, simon.horman@netronome.com wrote:
>The motivation for this is that rocker_port_internal_vlan_id_{get,put} appear
>to only partially implement the transaction model: memory allocation
>and freeing is transactional, but hash and bitmap manipulation is not.
>
>The latter could be fixed, however, as it is not currently exercised
>due to trans always being SWITCHDEV_TRANS_NONE it seems cleaner
>to make rocker_port_internal_vlan_id_get non-transactional.
>
>Found by inspection.
>I do not believe that this change should have any run-time effect.
>
>Fixes: c4f20321d968 ("rocker: support prepare-commit transaction model")
>Acked-by: Scott Feldman <sfeldma@gmail.com>
>Signed-off-by: Simon Horman <simon.horman@netronome.com>

Acked-by: Jiri Pirko <jiri@resnulli.us>
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
diff mbox

Patch

diff --git a/drivers/net/ethernet/rocker/rocker.c b/drivers/net/ethernet/rocker/rocker.c
index fde3186074bb..573179f9f63e 100644
--- a/drivers/net/ethernet/rocker/rocker.c
+++ b/drivers/net/ethernet/rocker/rocker.c
@@ -3852,7 +3852,6 @@  rocker_internal_vlan_tbl_find(struct rocker *rocker, int ifindex)
 }
 
 static __be16 rocker_port_internal_vlan_id_get(struct rocker_port *rocker_port,
-					       enum switchdev_trans trans,
 					       int ifindex)
 {
 	struct rocker *rocker = rocker_port->rocker;
@@ -3861,7 +3860,7 @@  static __be16 rocker_port_internal_vlan_id_get(struct rocker_port *rocker_port,
 	unsigned long lock_flags;
 	int i;
 
-	entry = rocker_port_kzalloc(rocker_port, trans, sizeof(*entry));
+	entry = kzalloc(sizeof(*entry), GFP_KERNEL);
 	if (!entry)
 		return 0;
 
@@ -3871,7 +3870,7 @@  static __be16 rocker_port_internal_vlan_id_get(struct rocker_port *rocker_port,
 
 	found = rocker_internal_vlan_tbl_find(rocker, ifindex);
 	if (found) {
-		rocker_port_kfree(rocker_port, trans, entry);
+		kfree(entry);
 		goto found;
 	}
 
@@ -3895,7 +3894,6 @@  found:
 }
 
 static void rocker_port_internal_vlan_id_put(struct rocker_port *rocker_port,
-					     enum switchdev_trans trans,
 					     int ifindex)
 {
 	struct rocker *rocker = rocker_port->rocker;
@@ -3917,7 +3915,7 @@  static void rocker_port_internal_vlan_id_put(struct rocker_port *rocker_port,
 		bit = ntohs(found->vlan_id) - ROCKER_INTERNAL_VLAN_ID_BASE;
 		clear_bit(bit, rocker->internal_vlan_bitmap);
 		hash_del(&found->entry);
-		rocker_port_kfree(rocker_port, trans, found);
+		kfree(found);
 	}
 
 not_found:
@@ -4903,9 +4901,7 @@  static int rocker_probe_port(struct rocker *rocker, unsigned int port_number)
 	rocker_port_set_learning(rocker_port, SWITCHDEV_TRANS_NONE);
 
 	rocker_port->internal_vlan_id =
-		rocker_port_internal_vlan_id_get(rocker_port,
-						 SWITCHDEV_TRANS_NONE,
-						 dev->ifindex);
+		rocker_port_internal_vlan_id_get(rocker_port, dev->ifindex);
 	err = rocker_port_ig_tbl(rocker_port, SWITCHDEV_TRANS_NONE, 0);
 	if (err) {
 		dev_err(&pdev->dev, "install ig port table failed\n");
@@ -5153,7 +5149,7 @@  static int rocker_port_bridge_join(struct rocker_port *rocker_port,
 {
 	int err;
 
-	rocker_port_internal_vlan_id_put(rocker_port, SWITCHDEV_TRANS_NONE,
+	rocker_port_internal_vlan_id_put(rocker_port,
 					 rocker_port->dev->ifindex);
 
 	rocker_port->bridge_dev = bridge;
@@ -5164,9 +5160,7 @@  static int rocker_port_bridge_join(struct rocker_port *rocker_port,
 	if (err)
 		return err;
 	rocker_port->internal_vlan_id =
-		rocker_port_internal_vlan_id_get(rocker_port,
-						 SWITCHDEV_TRANS_NONE,
-						 bridge->ifindex);
+		rocker_port_internal_vlan_id_get(rocker_port, bridge->ifindex);
 	return rocker_port_vlan(rocker_port, SWITCHDEV_TRANS_NONE, 0, 0);
 }
 
@@ -5174,7 +5168,7 @@  static int rocker_port_bridge_leave(struct rocker_port *rocker_port)
 {
 	int err;
 
-	rocker_port_internal_vlan_id_put(rocker_port, SWITCHDEV_TRANS_NONE,
+	rocker_port_internal_vlan_id_put(rocker_port,
 					 rocker_port->bridge_dev->ifindex);
 
 	rocker_port->bridge_dev = NULL;
@@ -5186,7 +5180,6 @@  static int rocker_port_bridge_leave(struct rocker_port *rocker_port)
 		return err;
 	rocker_port->internal_vlan_id =
 		rocker_port_internal_vlan_id_get(rocker_port,
-						 SWITCHDEV_TRANS_NONE,
 						 rocker_port->dev->ifindex);
 	err = rocker_port_vlan(rocker_port, SWITCHDEV_TRANS_NONE, 0, 0);
 	if (err)